Here is the full list of all 50 Ninja Gaiden 3: Razor's Edge achievements worth 1,000 gamerscore.
Cleared 3 Ultimate Ninja Trials.
Cleared the game on Ultimate Ninja difficulty.
Cleared 5 Master Ninja Trials.
Reached Level 50.
Cleared 5 Leader Trials.
Cleared all Tests of Valor.
Cleared all chapters with Ayane, Momiji, and Kasumi.
Defeated 1000 enemies with the Shrouded Moon.
Cleared the game on Hard difficulty.
Defeated 1,000 enemies with the Kusari-gama.
Cleared the game on Master Ninja difficulty.
Defeated 1,000 enemies with the Falcon's Talons.
Defeated 1,000 enemies with the Fuma Kodachi.
Cleared 10 Acolyte Trials.
Cleared 10 Solo Trials.
Cleared 10 Mentor Trials.
Saved an ally.
Completed a Co-op Ninja Trial.
Defeated 1,000 enemies with the Lunar Staff.
Achieved a 100-hit combo.
Defeated 1,000 enemies with the Katana.
Obtained all Golden Scarabs.
Defeated 1,000 enemies with the Heavenly Dragon.
Defeated 1,000 enemies with the Eclipse Scythe.
Cleared the game on Hero or Normal difficulty.
Finished Day 7.
Finished Day 6 - Ayane.
Finished Day 6.
Finished Day 5.
Defeated 1,000 enemies with Dual Swords.
Won a Clan Battle.
Played a Clan Battle.
Finished Day 4.
Finished Day 3.
Finished Day 2 - Ayane.
Finished Day 2.
Successfully mastered the Wall Run technique.
Finished Day 1.
Successfully mastered the Kunai Climb technique.
Destroyed the Spider Tank.
Successfully mastered a Ninpo spell.
Successfully mastered the Izuna Drop technique.
Successfully mastered an Ultimate Technique.
Successfully mastered the Flying Bird Flip technique.
Successfully mastered the Sliding technique.
Reached the maximum karma multiplier during Bloody Rage.
Successfully mastered the Obliteration Technique.
Successfully mastered the Steel on Bone technique.
Successfully mastered the Falcon Dive technique.
Unlock all Ninja Skills for Hayabusa, Ayane, Momiji, Kasumi, and Unknown Ninja.